There is an abstract of a major new paper on the origins of haplogroups U8 and K, complete with a new U8-K tree. 55 new full sequences were added to 343 old ones. I'm not sure if it's as up-to-date as the recent PhyloTree Build 14 and the new Behar paper, which were based on about 820 sequences. Should be clearer when the paper is published. See http://dienekes.blogspot.com/2012/06/sm ... rt-ii.html